Answer:
Most likely Marge will not get her money back.
Step-by-step explanation:
Most likely Marge will not get her money back. This is because, despite her anger towards finding out where the ring came from she still decided to wear the ring for a certain amount of time, instead of immediately returning it. Due to taking so long to disafirm the contract between her and Harry, it is automatically taken as if she had affirmed the contract. Therefore, Harry does not have any obligation to return the $500 back to Marge.